1. Product Parameters (Table Format)
| Parameter | Specification | Standard |
|---|---|---|
| Chemical Composition | C: 0.08–0.15, Cr: 0.90–1.20, Mo: 0.25–0.35, V: 0.15–0.30, Mn: 0.40–0.70 | GB/T 5310-201713 |
| Mechanical Properties | Tensile Strength: 440–665 MPa, Yield Strength: ≥295 MPa, Elongation: ≥21% | ASTM A210217 |
| Heat Treatment | Normalized (930–960℃) + Tempered (680–730℃) | ASME SA-335317 |
| Size Range | OD: 10–530mm, WT: 2.0–70mm (Hot-Rolled/Cold-Drawn) | JIS G3462613 |
2. Key Applications
Power Plants: Boiler tubes (superheaters, reheaters) for steam pipelines (≤580℃).
Petrochemicals: High-pressure pipelines for oil/gas transport (H₂S-resistant with coating).
Nuclear Systems: Heat exchanger tubes in reactor cooling systems.
3. Advantages
High-Temperature Resistance: Stable performance at 500–580℃ with excellent creep strength.
Corrosion Resistance: Chromium forms protective oxide layers, reducing oxidation rates
Cost-Effective: Lower alloy content than advanced Cr-Mo-V steels (e.g., T91)
